Exactly what does he think children should be taught about morality? That Stalin, Hitler, Manson, Obama, and Pol Pot are neither good nor evil, just people with views on ethics that may differ from their own? That good and evil are obsolete concepts that should be ignored? That adultery, theft, and murder, and pride, envy, and avarice are old fashioned concepts with no moral significance? No thank you. My children will learn that God created the heavens and the earth, that Jesus died for our sins (but that sin still exists as it is described in God’s Word), and that we have to make moral choices every day on whether to follow good or evil. If he has a problem with that, he can try to use force to impose his will ... on those who cling not just to God but also to guns.
His time would be better spent worrying about what kids are being taught in madrasas right here in the US.